Package io.ebeaninternal.server.expression

Class AbstractExpression

java.lang.Object

io.ebeaninternal.server.expression.AbstractExpression

All Implemented Interfaces:

Expression, SpiExpression

Direct Known Subclasses:

AbstractTextExpression, AbstractValueExpression, ArrayContainsExpression, ArrayIsEmptyExpression

public abstract class AbstractExpression
extends Object
implements SpiExpression

Base class for simple expressions.

Field Summary

Fields inherited from interface io.ebeaninternal.api.SpiExpression

SQL_FALSE, SQL_TRUE

Method Summary

Modifier and Type	Method	Description
void	containsMany(BeanDescriptor<?> desc, ManyWhereJoins manyWhereJoin)	Process "Many" properties populating ManyWhereJoins.
SpiExpression	copyForPlanKey()	Return a copy of the expression for use in the query plan key.
Object	getIdEqualTo(String idName)	Return the bind Id value if this is a "equal to" expression for the id property.
boolean	naturalKey(NaturalKeyQueryData<?> data)	Check for match to a natural key query returning false if it doesn't match.
String	nestedPath(BeanDescriptor<?> desc)	Return the nested path for this expression.
void	prepareExpression(BeanQueryRequest<?> request)	Prepare the expression.
void	simplify()	Simplify nested expressions if possible.
void	validate(SpiExpressionValidation validation)	Validate all the properties/paths associated with this expression.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface io.ebeaninternal.api.SpiExpression

addBindValues, addSql, isSameByBind, queryBindHash, queryPlanHash, writeDocQuery

Method Detail

naturalKey

public boolean naturalKey(NaturalKeyQueryData<?> data)

Description copied from interface: SpiExpression

Check for match to a natural key query returning false if it doesn't match.

Specified by:

naturalKey in interface SpiExpression

simplify

public void simplify()

Description copied from interface: SpiExpression

Simplify nested expressions if possible.

Specified by:

simplify in interface SpiExpression

getIdEqualTo

public Object getIdEqualTo(String idName)

Description copied from interface: SpiExpression

Return the bind Id value if this is a "equal to" expression for the id property.

Specified by:

getIdEqualTo in interface SpiExpression

copyForPlanKey

public SpiExpression copyForPlanKey()

Description copied from interface: SpiExpression

Return a copy of the expression for use in the query plan key.

Specified by:

copyForPlanKey in interface SpiExpression

nestedPath

public String nestedPath(BeanDescriptor<?> desc)

Description copied from interface: SpiExpression

Return the nested path for this expression.

Specified by:

nestedPath in interface SpiExpression

containsMany

public void containsMany(BeanDescriptor<?> desc,
                         ManyWhereJoins manyWhereJoin)

Description copied from interface: SpiExpression

Process "Many" properties populating ManyWhereJoins.

Predicates on Many properties require an extra independent join clause.

Specified by:

containsMany in interface SpiExpression

prepareExpression

public void prepareExpression(BeanQueryRequest<?> request)

Description copied from interface: SpiExpression

Prepare the expression. For example, compile sub-query expressions etc.

Specified by:

prepareExpression in interface SpiExpression

validate

public void validate(SpiExpressionValidation validation)

Description copied from interface: SpiExpression

Validate all the properties/paths associated with this expression.

Specified by:

validate in interface SpiExpression